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ZA974384B - Method and apparatus for providing diversity in hard handoff for a cdma system - Google Patents

Method and apparatus for providing diversity in hard handoff for a cdma system

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Publication number
ZA974384B
ZA974384BZA974384AZA974384AZA974384BZA 974384 BZA974384 BZA 974384BZA 974384 AZA974384 AZA 974384AZA 974384 AZA974384 AZA 974384AZA 974384 BZA974384 BZA 974384B
Authority
ZA
South Africa
Prior art keywords
base station
remote unit
communication signal
active communication
antenna
Prior art date
Application number
ZA974384A
Inventor
Edward G Tiedemann Jr
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filedlitigationCriticalhttps://patents.darts-ip.com/?family=24612837&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA974384(B)"Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Qualcomm IncfiledCriticalQualcomm Inc
Publication of ZA974384BpublicationCriticalpatent/ZA974384B/en

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Abstract

In a communications network, a network user communicates using a remote unit with another user via at least one base station. The communications network has a first base station having a first coverage area and a second base station having a second coverage area. In the situation where communication is not established between the second base station and the remote unit, in order to provide communication between the remote unit and the first base station when the remote unit is in the first coverage and simultaneously in the second coverage area, the first base station produces a first active communication signal at intended for the remote unit. The first base station transmits the first active communication signal from a first antenna. The base station delays the first active communication signal to produce a first delayed active communication signal and transmits it from a second antenna wherein the second antenna is oriented with respect to the first antenna such that the first active communication signal and the first delayed active communication signal fade independently as perceived by the remote unit. The first base station may measures a round trip delay of the first active communication signal in order to identify that the remote unit is located within the second coverage area.
ZA974384A1996-05-221997-06-20Method and apparatus for providing diversity in hard handoff for a cdma systemZA974384B (en)

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
US08/651,430US5926470A (en)1996-05-221996-05-22Method and apparatus for providing diversity in hard handoff for a CDMA system

Publications (1)

Publication NumberPublication Date
ZA974384Btrue ZA974384B (en)1998-08-24

Family

ID=24612837

Family Applications (1)

Application NumberTitlePriority DateFiling Date
ZA974384AZA974384B (en)1996-05-221997-06-20Method and apparatus for providing diversity in hard handoff for a cdma system

Country Status (13)

CountryLink
US (1)US5926470A (en)
EP (1)EP0900512B1 (en)
JP (2)JP4191249B2 (en)
CN (1)CN1158889C (en)
AT (1)ATE302535T1 (en)
AU (1)AU3209197A (en)
BR (1)BR9712090A (en)
CA (1)CA2256409C (en)
DE (1)DE69733997T2 (en)
IL (1)IL127171A (en)
TW (1)TW361021B (en)
WO (1)WO1997044983A2 (en)
ZA (1)ZA974384B (en)

Families Citing this family (100)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH11511600A (en)*1995-08-311999-10-05ノキア テレコミュニカシオンス オサケ ユキチュア Method for selecting handover method and cellular radio system
JP3745459B2 (en)*1996-07-182006-02-15富士通株式会社 Communication method and communication apparatus for wireless LAN system
JP4124499B2 (en)*1996-11-142008-07-23富士通株式会社 Method for performing soft handoff in mobile communication system, mobile communication system and radio base station therefor
US5940761A (en)*1997-01-151999-08-17Qaulcomm IncorporatedMethod and apparatus for performing mobile assisted hard handoff between communication systems
US6359882B1 (en)*1997-04-012002-03-19Yipes Communications, Inc.Method and apparatus for transmitting data
WO1998056196A1 (en)*1997-06-041998-12-10Ntt Mobile Communications Network Inc.Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch
KR100242421B1 (en)*1997-04-142000-02-01윤종용 How to Assign Pilot Peen Offset in Digital Mobile Communication System
US6628630B1 (en)*1997-04-152003-09-30Matsushita Electric Industrial Co., Ltd.Spread spectrum communication method
EP1841271B1 (en)*1997-04-242017-11-08Ntt Docomo, Inc.Mobile station and network controller
JP3370902B2 (en)*1997-06-032003-01-27株式会社エヌ・ティ・ティ・ドコモ Handover control method in mobile radio communication
WO1998058503A1 (en)*1997-06-161998-12-23Mitsubishi Denki Kabushiki KaishaMobile communication system
US6330232B1 (en)*1997-07-162001-12-11Nortel Networks LimitedBase station transceiver subsystem carrier selection at a CDMA cell site
JP2945357B2 (en)*1997-07-191999-09-06松下電器産業株式会社 Mobile station device and control station device of CDMA system
GB9726912D0 (en)*1997-12-191998-02-18Advanced Communications ConsulApparatus and method for detection of signals
KR100277101B1 (en)*1998-02-172001-01-15윤종용Method for performing hard handoff between central offices in code division multiple access network
KR100308900B1 (en)*1998-05-132001-11-15윤종용Hand-off apparatus and method of mobile communication system having time switched transmission deversity
US6381235B1 (en)*1998-05-292002-04-30Lucent Technologies Inc.Wireless CDMA system having a unique forward configuration control channel
US6560210B1 (en)*1998-06-102003-05-06Lucent Technologies Inc.Handing off a wireless terminal in a wireless telecommunications system
JP3204310B2 (en)*1998-08-122001-09-04日本電気株式会社 CDMA mobile communication system and downlink transmission power control method thereof
US6771963B1 (en)*1998-08-172004-08-03Lucent Technologies Inc.Triggering handdowns and handoffs of mobile stations between bordering cells of cellular wireless communication systems
KR20000019105A (en)*1998-09-082000-04-06정장호Hard handoff method between frequency assignments in cdma mobile communication system
US6377608B1 (en)*1998-09-302002-04-23Intersil Americas Inc.Pulsed beacon-based interference reduction mechanism for wireless communication networks
US6259730B1 (en)1998-11-102001-07-10Lucent Technologies, Inc.Transmit diversity and reception equalization for radio links
US6411819B1 (en)*1998-11-192002-06-25Scoreboard, Inc.Method of modeling a neighbor list for a mobile unit in a CDMA cellular telephone system
JP2000184426A (en)*1998-12-162000-06-30Fujitsu Ltd Base station device and base station control device
US6754493B1 (en)*1998-12-182004-06-22Telefonaktiebolaget Lm EricssonMethod and systems for dynamic threshold adjustment for handoffs in radio communication systems
US6389298B1 (en)*1999-01-112002-05-14Lucent Technologies Inc.Signaling to support wireless service redirection
US6424834B1 (en)*1999-02-022002-07-23Nortel Networks CorporationPrecision hard handoff method using pilot beacon distributors
JP3001570B1 (en)*1999-02-222000-01-24埼玉日本電気株式会社 Adaptive antenna directivity control method and system
JP3448000B2 (en)*1999-03-162003-09-16株式会社ハイニックスセミコンダクター Method of extending communication area of mobile communication system and method of processing call between communication areas
FI112583B (en)*1999-05-262003-12-15Nokia Corp A method for implementing handover measurements between cellular radio systems and a terminal
JP3293599B2 (en)*1999-07-282002-06-17日本電気株式会社 CDMA mobile communication system and inter-system handoff control method
US6917597B1 (en)*1999-07-302005-07-12Texas Instruments IncorporatedSystem and method of communication using transmit antenna diversity based upon uplink measurement for the TDD mode of WCDMA
AU1170201A (en)*1999-10-282001-05-08Celletra Ltd.Cellular base station augmentation
US7236807B1 (en)1999-10-282007-06-26Celletra Ltd.Cellular base station augmentation
JP3506072B2 (en)*1999-11-102004-03-15日本電気株式会社 CDMA mobile communication system and communication control method
KR20030004326A (en)*2000-01-272003-01-14셀레트라 리미티드Cellular base station augmentation system and method
US7158484B1 (en)*2000-02-252007-01-02Lucent Technologies Inc.Methods and apparatus for topology sensing in networks with mobile nodes
AU2001255819A1 (en)*2000-03-292001-10-08Transcept Opencell, Inc.Operations and maintenance architecture for multiprotocol distributed system
AU2000243410A1 (en)*2000-04-112001-10-23Airnet Communications CorporationMethod and apparatus employing delay combining for receive diversity in a wireless system repeater
KR100393620B1 (en)*2000-04-122003-08-02삼성전자주식회사Method for providing concurrent service handoff in a mobile communication system
US6826161B1 (en)2000-07-202004-11-30Telefonaktiebolaget Lm Ericsson (Publ)Slewing detector system and method for the introduction of hysteresis into a hard handoff decision
US7123916B2 (en)*2000-07-252006-10-17Denso CorporationHandoff adaptation for CDMA systems
US6901061B1 (en)2000-09-052005-05-31Cisco Technology, Inc.Handoff control in an enterprise division multiple access wireless system
US7016331B1 (en)*2000-09-052006-03-21Cisco Technology, Inc.Method of handoff control in an enterprise code division multiple access wireless system
US9130810B2 (en)2000-09-132015-09-08Qualcomm IncorporatedOFDM communications methods and apparatus
US7295509B2 (en)2000-09-132007-11-13Qualcomm, IncorporatedSignaling method in an OFDM multiple access system
US6694147B1 (en)*2000-09-152004-02-17Flarion Technologies, Inc.Methods and apparatus for transmitting information between a basestation and multiple mobile stations
CN1159931C (en)*2000-10-022004-07-28株式会社Ntt都科摩 Mobile communication system, base station mobile station and mobile communication control method
US7054631B2 (en)*2000-10-232006-05-30Denso CorporationEnhancement of soft handoff in a mobile wireless network through the use of dynamic information feedback from mobile users
JP3479840B2 (en)*2000-11-222003-12-15日本電気株式会社 Mobile communication control method and system, and mobile station
US7295536B2 (en)*2001-01-042007-11-13Ericsson Inc.Systems and methods for soft handoff and other diversity communication using base stations supporting common radio configurations
US20030185171A1 (en)*2002-03-282003-10-02Motorola, Inc.Method and apparatus for transmitting diversity or beacon information
US7768974B2 (en)*2003-02-032010-08-03Alcatel-LucentMethod and arrangement for generating pilot beacons in wireless communication systems
US9148256B2 (en)2004-07-212015-09-29Qualcomm IncorporatedPerformance based rank prediction for MIMO design
US9137822B2 (en)2004-07-212015-09-15Qualcomm IncorporatedEfficient signaling over access channel
CN100396149C (en)*2004-11-172008-06-18华为技术有限公司 The method of shortening the switching delay
WO2006073893A2 (en)*2005-01-052006-07-13Atc Technologies, LlcAdaptive beam forming with multi-user detection and interference reduction in satellite communiation systems and methods
US9246560B2 (en)2005-03-102016-01-26Qualcomm IncorporatedSystems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en)2005-03-112015-10-06Qualcomm IncorporatedSystems and methods for beamforming feedback in multi antenna communication systems
US8446892B2 (en)2005-03-162013-05-21Qualcomm IncorporatedChannel structures for a quasi-orthogonal multiple-access communication system
US9461859B2 (en)2005-03-172016-10-04Qualcomm IncorporatedPilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en)2005-03-172015-09-22Qualcomm IncorporatedPilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en)2005-03-172016-12-13Qualcomm IncorporatedPilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en)2005-04-012015-11-10Qualcomm IncorporatedSystems and methods for control channel signaling
US9408220B2 (en)2005-04-192016-08-02Qualcomm IncorporatedChannel quality reporting for adaptive sectorization
US9036538B2 (en)2005-04-192015-05-19Qualcomm IncorporatedFrequency hopping design for single carrier FDMA systems
US8611284B2 (en)2005-05-312013-12-17Qualcomm IncorporatedUse of supplemental assignments to decrement resources
US8879511B2 (en)2005-10-272014-11-04Qualcomm IncorporatedAssignment acknowledgement for a wireless communication system
US8565194B2 (en)2005-10-272013-10-22Qualcomm IncorporatedPuncturing signaling channel for a wireless communication system
US8462859B2 (en)2005-06-012013-06-11Qualcomm IncorporatedSphere decoding apparatus
US9179319B2 (en)2005-06-162015-11-03Qualcomm IncorporatedAdaptive sectorization in cellular systems
US20070071147A1 (en)*2005-06-162007-03-29Hemanth SampathPseudo eigen-beamforming with dynamic beam selection
US8599945B2 (en)2005-06-162013-12-03Qualcomm IncorporatedRobust rank prediction for a MIMO system
US7609676B2 (en)*2005-06-302009-10-27Motorola, Inc.Method for preventing reporting of duplicate pilots within a communication system
US8885628B2 (en)2005-08-082014-11-11Qualcomm IncorporatedCode division multiplexing in a single-carrier frequency division multiple access system
US9209956B2 (en)2005-08-222015-12-08Qualcomm IncorporatedSegment sensitive scheduling
US20070041457A1 (en)2005-08-222007-02-22Tamer KadousMethod and apparatus for providing antenna diversity in a wireless communication system
US8644292B2 (en)2005-08-242014-02-04Qualcomm IncorporatedVaried transmission time intervals for wireless communication system
US9136974B2 (en)2005-08-302015-09-15Qualcomm IncorporatedPrecoding and SDMA support
US8582509B2 (en)2005-10-272013-11-12Qualcomm IncorporatedScalable frequency band operation in wireless communication systems
US9172453B2 (en)2005-10-272015-10-27Qualcomm IncorporatedMethod and apparatus for pre-coding frequency division duplexing system
US9144060B2 (en)2005-10-272015-09-22Qualcomm IncorporatedResource allocation for shared signaling channels
US9210651B2 (en)2005-10-272015-12-08Qualcomm IncorporatedMethod and apparatus for bootstraping information in a communication system
US9088384B2 (en)2005-10-272015-07-21Qualcomm IncorporatedPilot symbol transmission in wireless communication systems
US9225488B2 (en)2005-10-272015-12-29Qualcomm IncorporatedShared signaling channel
US8477684B2 (en)2005-10-272013-07-02Qualcomm IncorporatedAcknowledgement of control messages in a wireless communication system
US8045512B2 (en)2005-10-272011-10-25Qualcomm IncorporatedScalable frequency band operation in wireless communication systems
US9225416B2 (en)2005-10-272015-12-29Qualcomm IncorporatedVaried signaling channels for a reverse link in a wireless communication system
US8693405B2 (en)2005-10-272014-04-08Qualcomm IncorporatedSDMA resource management
US8582548B2 (en)2005-11-182013-11-12Qualcomm IncorporatedFrequency division multiple access schemes for wireless communication
US20070153983A1 (en)*2006-01-032007-07-05Sony Ericsson Mobile Communications AbMethod and Apparatus for Routing Emergency Calls in a VoIP System
US8920343B2 (en)2006-03-232014-12-30Michael Edward SabatinoApparatus for acquiring and processing of physiological auditory signals
US7358893B2 (en)*2006-09-082008-04-15Novatel, Inc.Pseudo random code modulated signal combiner
US8380531B2 (en)*2008-07-252013-02-19Invivodata, Inc.Clinical trial endpoint development process
KR101618283B1 (en)*2009-05-222016-05-04삼성전자주식회사Method of information feedback for coordinated multiple point communications
CN102111853B (en)*2009-12-252015-11-25联想(北京)有限公司A kind of method that automatically switching network connects, device and mobile terminal
US9554367B1 (en)*2014-05-052017-01-24Sprint Spectrum L.P.Systems and methods for determining an access node for a wireless device
US20240349141A1 (en)*2021-08-062024-10-17Sony Group CorporationCommunication device and communication method
CN116437158B (en)*2023-06-132023-09-01浙江大华技术股份有限公司Video transmission method, video transmission device, and computer-readable storage medium

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4901307A (en)*1986-10-171990-02-13Qualcomm, Inc.Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5101501A (en)*1989-11-071992-03-31Qualcomm IncorporatedMethod and system for providing a soft handoff in communications in a cdma cellular telephone system
US5267262A (en)*1989-11-071993-11-30Qualcomm IncorporatedTransmitter power control system
US5109390A (en)*1989-11-071992-04-28Qualcomm IncorporatedDiversity receiver in a cdma cellular telephone system
US5103459B1 (en)*1990-06-251999-07-06Qualcomm IncSystem and method for generating signal waveforms in a cdma cellular telephone system
IL100213A (en)*1990-12-071995-03-30Qualcomm IncCDMA microcellular telephone system and distributed antenna system therefor
US5164958A (en)*1991-05-221992-11-17Cylink CorporationSpread spectrum cellular handoff method
US5235615A (en)*1991-05-221993-08-10Cylink CorporationSpread spectrum method
US5195090A (en)*1991-07-091993-03-16At&T Bell LaboratoriesWireless access telephone-to-telephone network interface architecture
CA2066538C (en)*1991-07-091997-12-23Brian David BolligerMobile-telephone system call processing arrangement
US5184347A (en)*1991-07-091993-02-02At&T Bell LaboratoriesAdaptive synchronization arrangement
US5267261A (en)*1992-03-051993-11-30Qualcomm IncorporatedMobile station assisted soft handoff in a CDMA cellular communications system
US5295153A (en)*1992-04-131994-03-15Telefonaktiebolaget L M EricssonCDMA frequency allocation
US5329555A (en)*1992-09-091994-07-12Motorola, Inc.Method and apparatus for antenna diversity in a wireless communication system
DE4303355A1 (en)*1993-02-051994-08-11Philips Patentverwaltung Radio system
US5438565A (en)*1993-03-311995-08-01At&T Corp.Packet switch to provide code division, multiple access cellular service
US5812935A (en)*1993-04-171998-09-22Hughes ElectronicsCellular system employing base station transmit diversity according to transmission quality level
WO1994026074A1 (en)*1993-04-261994-11-10Airtouch CommunicationsCdma transmission delay method and apparatus
EP0624994B1 (en)*1993-05-122000-04-05Ntt Mobile Communications Network Inc.Hand-off method and mobile station for spread spectrum communications system
US5437055A (en)*1993-06-031995-07-25Qualcomm IncorporatedAntenna system for multipath diversity in an indoor microcellular communication system
US6157668A (en)*1993-10-282000-12-05Qualcomm Inc.Method and apparatus for reducing the average transmit power of a base station
US5697055A (en)*1994-10-161997-12-09Qualcomm IncorporatedMethod and apparatus for handoff between different cellular communications systems
US5657325A (en)*1995-03-311997-08-12Lucent Technologies Inc.Transmitter and method for transmitting information packets with incremental redundancy

Also Published As

Publication numberPublication date
AU3209197A (en)1997-12-09
HK1018874A1 (en)2000-01-07
CN1225788A (en)1999-08-11
DE69733997T2 (en)2006-06-29
DE69733997D1 (en)2005-09-22
EP0900512A2 (en)1999-03-10
WO1997044983A3 (en)1997-12-24
CA2256409C (en)2011-08-02
CA2256409A1 (en)1997-11-27
JP4643600B2 (en)2011-03-02
BR9712090A (en)1999-08-31
IL127171A (en)2003-06-24
CN1158889C (en)2004-07-21
JP2007195206A (en)2007-08-02
IL127171A0 (en)1999-09-22
EP0900512B1 (en)2005-08-17
JP4191249B2 (en)2008-12-03
ATE302535T1 (en)2005-09-15
TW361021B (en)1999-06-11
US5926470A (en)1999-07-20
JP2000511377A (en)2000-08-29
WO1997044983A2 (en)1997-11-27

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